<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <title>原生js创建元素和节点</title>
  </head>
  <body>
    
    <script>
    var a = document.createElement('p')
    var att = document.createAttribute('class')
    att.value = 'goos'
    a.setAttributeNode(att)
    console.log(a);
    </script>
  </body>
</html>
